package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import io.swagger.models.auth.In;
import lombok.extern.slf4j.Slf4j;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTIgnoredError;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

  @Autowired
  private OrderMapper orderMapper;
  @Autowired
  private OrderDetailMapper orderDetailMapper;
  @Autowired
   private AddressBookMapper addressBookMapper;
  @Autowired
  private UserMapper userMapper;
  @Autowired
  private ShoppingCartMapper  shoppingCartMapper;
  @Autowired
  private WeChatPayUtil weChatPayUtil;
@Autowired
  WebSocketServer  webSocketServer;

  /*
    * 用户下单
    * */
    @Override
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
      //处理各种业务异常(地址簿为空.购物车数据为空)
      AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
      if(addressBook==null){
          throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
      }
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart=new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list==null||list.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入一条数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setUserId(userId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orderMapper.insert(orders);
      //向订单明细表插入n条数据
      List<OrderDetail> orderDetails=new ArrayList<>();
      for (ShoppingCart cart : list) {
        OrderDetail orderDetail=new OrderDetail();
        BeanUtils.copyProperties(cart,orderDetail);
        orderDetail.setOrderId(orders.getId());
        orderDetails.add(orderDetail);
      }
      orderDetailMapper.insertBatch(orderDetails);
      //清空购物车

      shoppingCartMapper.deleteByUserId(userId);
      //返回VO数据
      OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder().
              id(orders.getId())
              .orderTime(orders.getOrderTime())
              .orderNumber(orders.getNumber())
              .orderAmount(orders.getAmount())
              .build();
      return orderSubmitVO;
    }

  /**
   * 订单支付
   *
   * @param ordersPaymentDTO
   * @return
   */
  public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
    // 当前登录用户id
    Long userId = BaseContext.getCurrentId();
    User user = userMapper.getById(userId);

    //调用微信支付接口，生成预支付交易单
    JSONObject jsonObject = weChatPayUtil.pay(
            ordersPaymentDTO.getOrderNumber(), //商户订单号
            new BigDecimal(0.01), //支付金额，单位 元
            "苍穹外卖订单", //商品描述
            user.getOpenid() //微信用户的openid
    );

    if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
      throw new OrderBusinessException("该订单已支付");
    }

    OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
    vo.setPackageStr(jsonObject.getString("package"));

    return vo;
  }

  /**
   * 支付成功，修改订单状态
   *
   * @param outTradeNo
   */
  public void paySuccess(String outTradeNo) {

    // 根据订单号查询订单
    Orders ordersDB = orderMapper.getByNumber(outTradeNo);

    // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
    Orders orders = Orders.builder()
            .id(ordersDB.getId())
            .status(Orders.TO_BE_CONFIRMED)
            .payStatus(Orders.PAID)
            .checkoutTime(LocalDateTime.now())
            .build();

    orderMapper.update(orders);
    Map map=new HashMap();
    map.put("type",1);
    map.put("orderId",ordersDB.getId());
    map.put("content","订单号:"+outTradeNo);
    String js = JSON.toJSONString(map);
    webSocketServer.sendToAllClient(js);
  }
/*
* 历史订单查询
* */
  @Override
  public PageResult pageQuary(OrdersPageQueryDTO ordersPageQueryDTO) {
    PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
    ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
    Page<Orders> page= orderMapper.pageQuary(ordersPageQueryDTO);
    List<OrderVO>  list=new ArrayList<>();
    if(page !=null&&page.getTotal()>0){
      for (Orders orders : page) {
        OrderVO orderVO=new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail > orderDetailList=orderDetailMapper.getByOrderId(orders.getId());
        orderVO.setOrderDetailList(orderDetailList);
        list.add(orderVO);
      }
    }
    return new PageResult(page.getTotal(),list);
  }
/*
* 查询订单详情
* */
  @Override
  public OrderVO orderDetail(Long id) {
    OrderVO orderVO=new OrderVO();
    Orders orders= orderMapper.getById(id);
    BeanUtils.copyProperties(orders,orderVO);
    List<OrderDetail> list = orderDetailMapper.getByOrderId(id);
    orderVO.setOrderDetailList(list);
    return orderVO;
  }
  public void userCancelById(Long id) throws Exception {
    // 根据id查询订单
    Orders ordersDB = orderMapper.getById(id);

    // 校验订单是否存在
    if (ordersDB == null) {
      throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
    }

    //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
    if (ordersDB.getStatus() > 2) {
      throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
    }

    Orders orders = new Orders();
    orders.setId(ordersDB.getId());

    // 订单处于待接单状态下取消，需要进行退款
    if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
      //调用微信支付退款接口
      weChatPayUtil.refund(
              ordersDB.getNumber(), //商户订单号
              ordersDB.getNumber(), //商户退款单号
              new BigDecimal(0.01),//退款金额，单位 元
              new BigDecimal(0.01));//原订单金额

      //支付状态修改为 退款
      orders.setPayStatus(Orders.REFUND);
    }

    // 更新订单状态、取消原因、取消时间
    orders.setStatus(Orders.CANCELLED);
    orders.setCancelReason("用户取消");
    orders.setCancelTime(LocalDateTime.now());
    orderMapper.update(orders);
  }
/*
* 再来一单
* */
  @Override
  public void repetition(Long id) {
    List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
    Long user = BaseContext.getCurrentId();
    for (OrderDetail orderDetail : orderDetails) {
      ShoppingCart  shoppingCart=new ShoppingCart();
      BeanUtils.copyProperties(orderDetail,shoppingCart,"id");
      shoppingCart.setUserId(user);
      shoppingCart.setCreateTime(LocalDateTime.now());
      shoppingCartMapper.insert(shoppingCart);
    }

  }
/*
* 订单搜索
* */
  @Override
  public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
    PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
    Page<Orders> page = orderMapper.pageQuary(ordersPageQueryDTO);
    List<Orders> orders = page.getResult();
    List<OrderVO> orderVOS=new ArrayList<>();
    for (Orders order : orders) {
      OrderVO  temp=new OrderVO();
      BeanUtils.copyProperties(order,temp);

      List<OrderDetail> ods = orderDetailMapper.getByOrderId(order.getId());
      List<String> collect = ods.stream().map(x -> {
        String target=x.getName()+"*"+x.getNumber()+";";
        return  target;
      }).collect(Collectors.toList());

      temp.setOrderDishes(String.join("",collect));
      orderVOS.add(temp);
    }
    return new PageResult(page.getTotal(),orderVOS);
  }
    /*
    * 各个状态订单数量统计
    * */
  @Override
  public OrderStatisticsVO statistics() {
    Integer confirmed=orderMapper.getByStatus(Orders.CONFIRMED);
    Integer  deliveryInProgress=orderMapper.getByStatus(Orders.DELIVERY_IN_PROGRESS);
    Integer   tobeConfirmed=orderMapper.getByStatus(Orders.TO_BE_CONFIRMED);
    OrderStatisticsVO ods=new OrderStatisticsVO();
    ods.setConfirmed(confirmed);
    ods.setToBeConfirmed(tobeConfirmed);
    ods.setDeliveryInProgress(deliveryInProgress);
    return ods;
  }
/*
* 接单
* */
  @Override
  public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
    Orders orders=new Orders();
    orders.setStatus(Orders.CONFIRMED);
    orders.setId(ordersConfirmDTO.getId());
    orderMapper.update(orders);
  }
/*
* 拒单
* */
  @Override
  public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
    Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());
    if(ordersDB==null||!ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
      throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
    }
    //支付状态
    Integer payStatus =
            ordersDB.getPayStatus();
    if (payStatus == Orders.PAID) {
      //用户已支付，需要退款
      String refund = weChatPayUtil.refund(
              ordersDB.getNumber(),
              ordersDB.getNumber(),
              new BigDecimal(0.01),
              new BigDecimal(0.01));
      log.info("申请退款：{}", refund);
    }
    Orders orders=new Orders();
    orders.setId(ordersRejectionDTO.getId());
    orders.setRejectionReason(orders.getRejectionReason());
    orders.setStatus(Orders.CANCELLED);
    orders.setCancelTime(LocalDateTime.now());
    orderMapper.update(orders);
  }

  @Override
  public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
    Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

    //支付状态
    Integer payStatus =
            ordersDB.getPayStatus();
    if (payStatus == Orders.PAID) {
      //用户已支付，需要退款
      String refund = weChatPayUtil.refund(
              ordersDB.getNumber(),
              ordersDB.getNumber(),
              new BigDecimal(0.01),
              new BigDecimal(0.01));
      log.info("申请退款：{}", refund);
    }
    Orders orders=new Orders();
    orders.setId(ordersCancelDTO.getId());
    orders.setCancelReason(orders.getRejectionReason());
    orders.setStatus(Orders.CANCELLED);
    orders.setCancelTime(LocalDateTime.now());
    orderMapper.update(orders);
  }
/*
* 派送订单
* */
  @Override
  public void delivery(Long id) {
    Orders ordersDB = orderMapper.getById(id);
    if(ordersDB==null||!ordersDB.getStatus().equals(Orders.CONFIRMED)){
      throw  new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
    }
    Orders orders = new Orders();
    orders.setId(ordersDB.getId());
    // 更新订单状态,状态转为派送中
    orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
    orderMapper.update(orders);
  }

  @Override
  public void complete(Long id) {
    Orders ordersDB = orderMapper.getById(id);
    if(ordersDB==null|| !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
      throw  new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
    }
    Orders orders = new Orders();
    orders.setId(ordersDB.getId());
    // 更新订单状态,状态转为派送中
    orders.setStatus(Orders.COMPLETED);
    orders.setDeliveryTime(LocalDateTime.now());
    orderMapper.update(orders);
  }

  /*
  * 催单
  * */
  @Override
  public void reminder(Long id) {
    Orders ordersDB = orderMapper.getById(id);
    if(ordersDB==null|| !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
      throw  new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
    }
    Map map=new HashMap();
    map.put("type",2);
    map.put("orderId",ordersDB.getId());
    map.put("content","订单号:"+ordersDB.getNumber());
    String js = JSON.toJSONString(map);
    webSocketServer.sendToAllClient(js);
  }

}
